00:00 Halloween is a holiday with ancient origins that involves dressing up, pumpkins, and witches.

02:06 Halloween originated from the Catholic Holy Day of All Saints Day and the Celtic pagan festival of Sáhuyn, and it became more popular in the United States with the mass migration of Irish in the 19th century.

03:45 The tradition of wearing costumes and trick-or-treating originated from the pagan festival of Sáhuyn and the practice of mumming and guising in Europe, and it became more popular in the United States after World War II.

05:14 Trick-or-treating became popular in the US after World War II, and the phrase "trick-or-treat" originated from the 18th century tradition of pulling pranks, while the tradition of dressing up in costumes and trick-or-treating has slowly spread outside of the US with its depiction in movies like E.T.

06:51 The use of carved pumpkins, or Jack-O-Lanterns, during Halloween originated from the Washington Irving story The Legend of Sleepy Hollow, and pumpkins were actually used during Thanksgiving in the late 19th century; historically, trick-or-treating involved asking for food, but candy became more popular and commercialized in the 40s and 50s, with a quarter of all candy produced in the US being sold around Halloween.

08:26 Candy apples, black cats, witches, and bats are all modern adaptations of older beliefs that got linked to Halloween due to the holiday's association with death and the occult, with the image of a witch flying around on a broom dating back to the mid-15th century and the stereotypical image of witches wearing pointy black hats originating from L. Frank Baum's book The Wizard of Oz.

09:59 Bats are associated with Halloween due to their connection with death and the belief that if a bat is found in a house, someone is going to die, while candy corn originated in the 1880s and became associated with Halloween because of its harvest connotations.